Shock-absorbing device for cycles.



F. R. GRAHAM-YCOLL.

SHOCK ABSORBING DEVICE FOR CYCLES. APPLIoATloN FILED APR. s, 1907.

Y /n/ ,//////////////////////////////y/////y////// WITNESSES. l INVENTQR y MM 752,9/ GM-rmai M W 4 y ATTORNE YS 1n: Nonms PETERS co.. wAsmNcmN, D. c.

PATENTED PEB. 25, 1908.

FREDERICK R. GRAHAM-YOOLL, OF LEITH, SCOTLAND.

SHOCK-ABSORBING DEVICE FOR CYCLES.

Specification of Letters Patent.

Patented Feb. 25, 1908.

Application filed April 3. 1907. Serial No. 366.174.

T o all 'whom it may concern:

Be it known that l, FREDERICK RICHARD GRAHAM-YOOLL, a subject of the King of Great Britain and Ireland, and a resident of Leith, in the county of 4Midlothian, Scotland, have invented certain new and useful Tmprovements in Shock-Absorbing Devices for Cycles, and of which the following is thel specification.

This invention has for its object to provide improved, simple and eective devices for the insulation from shock and from vibration of handles and other parts of cycles, and the like, such as saddle pillars; also foot rests, when the device is to be used on a motor cycle. Hitherto, such devices as applied to handles and saddle pillars have only been capable of more or less vertical motion or of motion about a point (or hinge) or upon a pair of links. Such devices are largely ineffective in that the shocks most felt are those due to the inertia of the rider when the cycle is obstructed by encounter with an obstaclethat is to say, the tendency under these circumstances is for the rider to move forward upon the machine. The anti-vibration devices hitherto devised have been ineffective in that they did not materially absorb shock in this direction. The improved devices, while effective in absorbing vertical vibration, are also such that they effectively absorb longitudinal shock and vibration and are therefore of great advantage.

The essential feature of the invention is that the movable part-it may be the handle or it may be that part of the saddle pillar which carries the saddleis hinged upon an angled link at the one end and at the other is adapted to slide upon the fixed part of the handle-bar or saddle pillar at the same time moving vertically to some extent, while between the parts a spring (or springs) is arranged in a novel manner hereinafter explained.

In order that the invention and the manner of performing the same may be properly understood, there is hereunto appended a sheet of explanatory drawings, throughout which like reference numerals indicate simi-A lar parts, and in which-- Figures 1, 2, 3, and 4, are, respectively, a side elevation, an end elevation, a longitudinal vertical section, and a transverse vertical section of an example of the improved device applied to a handle; while Figs. 5 and 6, are, respectively, a sectional side elevation upon and a transverse vertical section of a like example applied to a saddle pillar.

In carrying out the invention according to the example shown in Figs. 1, 2, 3, and 4, the handle bar, 12,` has a portion removed from its upper side near its end (or a corresponding portion might, instead be secured to the end of the handle bar). The sides of the outer end of this part are somewhat flattened to receive a transverse pin, 14 (or a liner to receive the pin might be arranged within the tube) uponwhich is centered alever, 15. The opposite end of this lever, 15, is secured in an ovoid tube, 16, forming the handle, and of such dimensions as to embrace the handle-bar end. It is covered with any suitable material offering a firm gripfsuch as leather, felt, or cork. Or it may be a plain tube uncovered. At its inner end it is connected by short rivets, 13 (which act as horizontal pivots) to a ring, 17 fitted to slide upon the handle-b ar, 12, the rivets allowing of angling movementof the handle relatively to the ring, 17, and handle-bar, 12. The handle tube, 16, projects sufficiently far beyond the ring, 17, to prevent the abrasions made by the ring upon the tube, 12, from showing. In order to simplify construction the ring, 17, may be dispensed with and a rubbing projection be formed upon the interior of the handle tube, 16, but this arrangement is not so effective in that its motion is not so free.

The lever, 15, has formed upon it a heel, 19, andy between an embossed guide, 21, on the handle tube, 16, and a like part, 22, on the heel, 19, there is arranged a spring, 20. /Vithin the boss, 22, is a rubber buffer adapted to engage the interior of the handle tube, 16, and so act as a stop to limit the travel of the handle and also prevent jar.

It will be seen that when this device is in operation not only can the handle, 16, rock the upper end of the lever, 15, the spring, 20, being then compressed, but also a sliding movement is obtained by the turning of the lever upon its hinge pivots, and the sliding of the ring, 17, upon the handle-bar. Thus the vibration is very satisfactorily absorbed-much more satisfactorily than if the device merely allowed of vertical movement of the handle relatively to the handle-bar.

usual saddle clips. In order to enhance the strength and resiliency of this arrangement, the lever, 15, in addition to the heel, 19, and

t j spring, 20, acting between that heel and the ja spring, 24.

outer tube, 16, has also a heel, 23, projecting from the lever, 16, at its opposite end and in the opposite direction. Between this heel, 23, andV the inner tube, 12, there is arranged This double heel and double spring arrangement may also be applied in the case of handles.

What I claim is 1. A shock and vibration absorbing dej Vice for cycles comprising a laterally and vertically moving part, a fixed part, an inclined link within saidl moving part pivoted thereto and to said fixed part, in combination with spring means between said parts,

" substantially as described.

2. A v shock and vibration absorbing de vice for cycles, comprising a movable part, a fixed tubular part, a ring sliding thereon to which one end of the moving part is pivoted, between the moving part and the xed part and a. spring between the parts, as described.

3. A shock and vibration absorbing device for cycles, comprising an ovoid tubular Amoving part, a fixed part embraced thereby,

a sliding joint between said parts, and an inl l l clined link pivoted tovsaid lixed part and to one end of the moving with spring means between said parts, as described.

4. A shock and vibration absorbing device for cycles, comprising an ovoid tubular moving part, a iixed part embraced thereby, a ring sliding thereon and to which one end of the moving part is pivoted, an inclined link connecting the other end of the moving part to the fixed part and a spring between the parts, as described.

5. A shock and vibration absorbing device for cycles, comprising a moving part, a

fixed part, an inclined link connecting the f moving' part to the fixed part, a heel piece on the link and a spring acting between it and one of the parts, as described.

6. A shock and vibration absorbing device for cycles, comprising a moving part, a

part, in combination l fixed tubular part, a ring sliding thereon and to which one end of the moving part is pivoted, an inclined linkconnecting the other end of the moving part to the fixed part, a heel piece on the link and a spring acting between it and one of the parts, as described.

7. A shock and vibration absorbing device for cycles, comprising an ovoid tubular moving part, a fixed part embraced thereby, an inclined link connecting the moving part to the fixed part, a heel piece on the link and a spring acting between it and one of the parts, as described.V

In testimony whereof I have signed my name to this specicatio'n, in the presence of two subscribing witnesses.

FRED. R. GRAHAM-YOOLL. Witnesses: GEORGE COBB, J. T. HUTToN. 

